reFill usually works by "waiting" for an "available worker." Well, the past two days, it has been waiting for an available worker for hours and never processing pages. Even when you refresh the page (which sometimes gets you an available worker to process).

Try to reFill a page on on Wikipedia.

I am a user. I use it daily and this is the first time I've experience this. Also, the creator of the tool has not been active on Wikimedia for over a year, so I did ping their talk page.